The headforms are cast using the magnesium alloy AZ91-Ingot , density 1,8 Kg/liter according to the ISO DIS 6220 specifications , machine tooled to obtain the site for the ball joint ( diam. 2,75” ) and the thread M8 , to fix the clamp;

Surface finishing , polished by hand;

The tolerance on the dimensions is < 1%;

The standard weight are the following;

Size A Kg 1,5;

Size C Kg 1,85;

Size E Kg 2,1;

Size J Kg 3,1;

Size M Kg 4,0;

Size O Kg 4,5;

in order to reach the total mass required by the standard using a 1,6 Kg standard carriage or 1,2 Kg using ultra light twin wires drop carriage;